__init__.py 文件源码

def bare_attrs(draw, defaults=None):
    """
    Generate a tuple of an attribute and a strategy that yields values
    appropriate for that attribute.
    """
    default = NOTHING
    if defaults is True or (defaults is None and draw(st.booleans())):
        default = None
    return ((attr.ib(default=default), st.just(None)))